Joined: Feb 2012
Posts: 19,376
Likes: 5,517
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Shimano 7 speed indexing is compatible with Campy 8 speed, but for loosing that 8th cog use. (Both used 5mm c-c cog spacing).
JTek Shift Mates can translate the cable pull (actuation ratio) from one brand's levers to another brand's cassette or der. This is how I run Shimano 9 speed cassettes with Campy 9 speed Ergo levers. Andy
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AndrewRStewart